Vulnerability · Published Jul 5, 2023 · Assigned by mozilla
CVE-2023-37209
High 8.8
In plain English
A high-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)0.6%top 51.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A use-after-free condition existed in `NotifyOnHistoryReload` where a `LoadingSessionHistoryEntry` object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused. This vulnerability affects Firefox < 115.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox-esr | 115.0-r0 | ALPINE-CVE-2023-37209 |
| Alpine:v3.21 | firefox-esr | 115.0-r0 | ALPINE-CVE-2023-37209 |
| Alpine:v3.22 | firefox-esr | 115.0-r0 | ALPINE-CVE-2023-37209 |
| Alpine:v3.23 | firefox-esr | 115.0-r0 | ALPINE-CVE-2023-37209 |